I am tagging some people that I know to be knowledgeable on this subject, but I am throwing this wide to the Internet, too:
My Dad has proposed that he, my brother, and I hike a few big trails in Yosemite next Fall. The hikes that we’ve been looking at range from 3 to 7 miles, and gain anywhere from 1,000 to 3,000 feet in elevation along that path.
I would love to hear any guidance that you might have as to how to train for this.
No clue but I bet someone reading this knows.